NumberResearchThousands-blocks in 419-731
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 419-731 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 419 blocks
Most active assignees, all time — NPA 419
New assignments by month
Sep 2026
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-04-25 | 419-731-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | UPSANDUSKY | OH |
| 2014-04-28 | 419-731-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UPSANDUSKY | OH |
| 2004-09-03 | 419-731-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7158 | UPSANDUSKY | OH |
| 2009-12-31 | 419-731-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | UPSANDUSKY | OH |
| 2006-10-12 | 419-731-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | UPSANDUSKY | OH |
| 2011-09-23 | 419-731-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | UPSANDUSKY | OH |
| 2013-03-20 | 419-731-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OH | 464C | UPSANDUSKY | OH |
| 2014-03-20 | 419-731-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | UPSANDUSKY | OH |
| 2021-02-10 | 419-731-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OH | 464C | UPSANDUSKY | OH |
| 2023-07-03 | 419-731-9XXX | 9000–9999 | Assigned | ONVOY, LLC - OH | 464C | UPSANDUSKY | OH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.